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Physical & Chemical properties

Surface tension

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Description of key information

Surface tension of 2-amino-6-chloro-4-nitrophenol is lower than 60 mN/m for the water saturated solution (which is lower than 1 g/L) and for the 90% of the saturation solubility and borderline for the half saturated solution. According to the interpretation of the results suggested in the used method (OJEC A.5, point 3.2) the test sample should be regarded as a surface-active material.

Key value for chemical safety assessment

Surface tension:
44.3
in mN/m at 20°C and concentration in mg/L:
450

Additional information

The surface tension of 2-amino-6-chloro-4-nitrophenol was determined by following EU method A.5 (Surface Tension), the OECD guideline 115 (Surface Tension of Aqueous Solutions) and the GLP.

Determination of surface tension was carried out with digital tensiometer, at a temperature of 20C.

Three solutions at 90, 230 and 450 mg/L were prepared by dilution with distilled water in volumetric glassware. All the solutions were thermostated at 20.0 ± 0. 5°C and then tested. Three measurements were performed for each solution at 20°C. A new analysis was also performed on a 405 mg/L sample solution in water (corresponding to the 90% of the saturation solubility) as requested by the OJEC A5 method.

Surface tension of 2-amino-6-chloro-4-nitrophenol is lower than 60 mN/m for the water saturated solution (which is lower than 1 g/L) and for the 90% of the saturation solubility and borderline for the half saturated solution. According to the interpretation of the results suggested in the used method (OJEC A.5, point 3.2) the test sample should be regarded as a surface-active material.